Installation of an addition of an interroom door from two parties. Types of extensions and their features. Selection of planks by size

Doors play an important role in the interior of any room. That is why their installation and design should be approached with great responsibility. In order for the doors to have an aesthetic appearance, they are usually completed with additional trims. What is the function of extensions for interior doors and how to install them correctly? You will learn the answers to this and other questions from the article.

Products are special strips, which are horizontal and vertical, of different sizes and textures. They are installed in the doorway between the casing and the box. The need for this arises when it is necessary to mask defects, to give aesthetics to the door.

What else dobory need - to hide the missing width of the door frame. It is for this reason that the name appeared - dobornik, that is, covering the wide slopes at the openings. In a standard room, there are enough boats, but if an apartment or a house is built according to an individual project, then the platbands do not cope with their task, the extensions help to hide the “bare” side walls. Then the design and interior acquire a complete look.

Given the importance of the element, it is worth taking into account that the additional board should be as similar as possible to the door leaf in texture, color and style.

Reasons for installing slats

Door extensions are needed in cases where there are too wide openings in the room.

To make it more clear, let's take an example. The width of the wall is 200 mm. 70 mm of them will be blocked by a box and 130 mm will be closed with an extension. We add 20-30 mm for the groove and get the required plank size (150-160 mm). An additional element is needed only if the platbands are planned from two sides: internal and external.

Ennobling the opening with extensions is a relatively new trend that is gaining popularity. When thinking about how to expand the door frame, it is better to use specially prepared strips. Since the existing casing will not hide an empty wall. Dobors are produced in different widths and lengths, so they completely close the space between the slopes and the door leaf.

Materials and design features

Depending on the form and method of fastening, the types of extensions can be as follows:

Elements are made from a variety of materials. Depending on the raw materials used, door trims for interior doors are made of wood, plastic or MDF.

Wood dobor is made, as a rule, from natural wood. Ash, beech, oak and conifers are used. The additional beam can be edged or tongue-and-groove. It is extremely important that the door leaf and the additional element are made of the same material. This will avoid visual dissonance.

Dobor from MDF is the most requested. It is lightweight, resistant to mechanical damage and easy to install. It is made from a fine-fiber fraction, and is covered with a laminated film or natural veneer on top. Such extensions will be a good addition to both wooden doors and hollow door leaf.

Items from PVC or simply plastic Dobory for doors can be attributed to the number of budget options. They are low cost, easy to install and do not require additional maintenance. Most often used for front doors.

How to choose the right accessories

The first thing you should pay attention to when choosing a material for additional products is their compatibility with the door leaf. As mentioned earlier, for the reliability and harmony of the design, they must be made from the same raw material. It is best to purchase items with doors.

The quality of the selected material is also extremely important. The plank should not have any chips or cracks. A flat and smooth surface without defects indicates the good quality of the product.

If your choice fell on telescopic extensions for interior doors, then in this case, first of all, you need to make sure that there are fasteners. These should be special factory grooves, the shape and size of which are individually selected for all interior doors.

It is worth taking into account the price-quality ratio of the selected product. It is best to give preference to trusted brands and manufacturers. Cheap analogues are unlikely to be high quality.

Before buying a product, you need to accurately calculate how many additional elements you need. As a standard, 2.5 strips are installed on the door.

Dimensions of extensions for interior doors

Door extensions are available in any size, but standard trims are most suitable for an interior unit. The thickness of the additional element must correspond to the thickness of the groove located on the door frame itself. As a rule, it is from 10 mm to 16 mm. The most suitable width of extensions for interior doors ranges from 70 to 200 mm. If it turns out to be a little more, then it is adjusted by cutting. The height of the parts is 2100 mm.

In addition to standard sizes, the slats are made from the material required by the customer, suitable dimensions. Those who live in an apartment or house with an unusual layout are forced to resort to this option.

To independently determine the parameters of the addition, you need to measure the thickness of the wall, the height and width of the doorway. It is necessary to add a small margin of 1-2 cm to the measurements obtained. This is necessary in order to eliminate the possibility of error.

When installing door frames, quite often one has to deal with the problem of finishing the uncovered part of the slope. Especially for these purposes, the so-called additional elements that go on sale complete with the door product you purchase are intended. But the installation of these elements, which involves careful adjustment to the size of the open part of the slope, is impossible without understanding how to attach the extension to the box while maintaining the specified mounting density.

Types of door frames

Known samples of door framesthat require the use of extensions for their installation are divided into two types:

• products equipped with a groove for mounting the dobor;
• door frames that do not have such a groove.

In the first case, the elements of the extension are fixed in the groove of the box with one of their ends, while the other of them remains free. The second option for installing the extension involves fixing it on the door slope without rigidly fixing one of the sides.

The elements of the extension are usually made in the form of laths made of laminated MDF, having the appropriate color (preferably matching the color of the platbands and the door frame). Sometimes (in order to preserve the color pattern of the interior), elements of a different, more suitable color are used as extensions. A large selection of additional elements, differing not only in color, but also in width, allows them to be used when finishing slopes of any size. The main thing is that the width of the blanks you have chosen would allow you to fill the uncovered part of the slope with a minimum of waste.

Mounting elements with a groove

Consider the procedure for attaching extensions to door frames with a groove on them. The sequence of operations performed in this case may look like this:

1. First of all, it is necessary to install in place and properly fix the door frame (you can also hang the door itself, which will not interfere with the placement of extensions).
2. After that, you should adjust the extensions in length by trimming them to the required size.
3. Then it is necessary to measure the amount of indentation from the wall slope to the edge of the door frame (preferably in several places). With a large spread of measurements, the extensions will have to be cut in accordance with the contour of the slope. After that, a special edge tape is glued to their end part, to which the casing should subsequently be attached.
4. Following this, it is necessary to fix the extensions in the grooves of the box; and first a horizontal element is inserted, and only then the side (vertical) ones are installed. Pay attention to the fact that they are located strictly at 90 degrees to the plane of the box.
5. During installation, it is advisable to stick masking tape at 5-7 points on each additional element along its entire length, which will ensure its more reliable fixation in the mounting grooves.
6. Finally, you can fill in the gaps between the extension and the wall with mounting foam.
7. After the foam has hardened, it is necessary to cut off all its excess and proceed to the fastening of the platbands.

Installation of extensions without a groove

In this case, immediately after fixing the door in the opening, it will be necessary to carefully measure the unclosed part of the wall (up to the slope). After trying on the elements of the addition in place, they must be cut (it is best to do this along their long side), after which it will be possible to stick pieces of edge tape on both end parts.

With unplastered slopes, the fastening of the extensions is carried out using a small bar, which is attached to the slopes so that one of the sides of the extension can be fixed on it. The beam must be set strictly according to the level, which ensures the correct orientation in space of the installed elements. The order of fastening the top dobor is as follows:

1. First of all, the dobor element is attached to the bar.
2. The resulting gap between the wall and the extension is filled with mounting foam.
3. After the foam dries, its excess is removed with a regular knife, after which the casing is fixed.

In the event that the slopes have a flat and plastered surface, they usually do without an additional bar.

Why use them

We see that the technique of using extensions allows us to abandon the rather tedious procedure for plastering slopes. In addition, with a well-chosen and securely installed extension, the slope takes on a look that can decorate the interior of any modern room.

Before attaching extensions to the door, be sure to ask how you can make them yourself, using MDF panels or laminate blanks for this purpose. Such a solution will significantly simplify the task of closing the so-called "divergent" slopes (located in relation to the box at an angle other than 90 degrees).

Video

All tips for attaching extensions are located below:

When choosing interior doors, we want them to have a beautiful aesthetic appearance in addition to practicality. Well-chosen elements and correctly executed installation of extensions on the door will make the room more attractive and comfortable. The article considers the types of products, their features and methods of installation.

Door extensions are designed to create beautiful door portals that will look better and richer. The addition of the box when installing the door is required if there is a gap between the wall and.

In addition, structures are necessary for:

• Closing irregularities.
• Slope masking.
• Strengthening the entire structure of the doorway.
• Prevention of distortions of the door frame.

Product types

Dobory on the door - these are additional strips that close the wall in the opening, "getting" its thickness, which lacks the width of the box.

The main types of extensions are presented in the table:

The advantages of installing extensions are:

• High speed finishing process of the doorway.
• The room can be quickly given an aesthetically complete look.
• The absence of moisture on wood and MDF protects the structure from deformation, peeling of the outer layer of the finishing coating.
• Planks hide the joints of the wall with the box.
• When moving the sash, vibration on the box leads to cracks in the plaster or wallpaper. Dobory mask this area, as in the photo.

Materials for extensions

In the manufacture of elements, most often used:

• Tree. This is an environmentally friendly material, but its disadvantage is that it can deteriorate due to adverse conditions that arise during operation, which requires additional processing.

• Plastic. But for the arrangement of extensions, the usual cheap material will not work, it is necessary to choose high-strength plastic, better reinforced with metal.

• MDF. Due to the low mechanical strength and instability to moisture, such materials are most often used for arranging interior openings. During installation, cracking of the planks is possible, for example, when hammering nails. Therefore, you must first drill a mounting hole to install the fastener.

• Chipboard. It has a lower quality, but can be used to finish the internal front door in the house, has a low cost.

Calculation of the number of elements

Domestic manufacturers, for serial production, produce doors of different widths, 2 meters high, and European sets have a height of 2.1 meters. The platbands, respectively, have the same length.

In this case, the width of the door extensions can vary from 50 to 550 mm, and the thickness is selected according to the thickness of the groove present at the end of the main frame. High-quality extensions made of MDF, solid wood, laminate, usually have a thickness of 10 mm.

Often, apartment owners face a common problem: the entrance steel door was installed by a qualified specialist in compliance with all stages, but the opening looks aesthetically unfinished. The best solution would be to install extensions to match the canvas, which will give a neat appearance.

Prices for the production of decorative dobor

The door trim is made on the basis of MDF material 10 mm thick, the architraves are 10 cm. The table shows prices for a set of 6 elements (3 trims + 3 architraves).

Price for installation of extensions

* ATTENTION! IN All prices on the site are indicative and are not a public offer.

In order to avoid misunderstandings, we ask you to additionally clarify the cost of the positions and services you are interested in with managers.

Photos of our work

Advantages of our products

Extensions for entrance doors and interior blocks are designed to fill the gaps between the wall and the frame in case of a mismatch between their thickness and dimensions. They serve as decorative elements and are matched to match the color and texture. They are made of MDF panels 10 mm thick, platband 10 cm. This material has the following advantages:

Moisture resistance
and mechanical damage.

Heat and noise insulation properties.

Simple and fast installation.

Wide range of colors, imitation of natural wood, stone, etc.

Practicality and durability.

The company "Spetszamer" offers to buy extensions for entrance doors with installation at a reasonable price. Thanks to this product, you will save money and time on plastering and finishing slopes to create a complete entrance look.

Options for finishing the doorway with extensions

In order for the result of the installation of extensions to meet the expectations of customers, it is necessary to choose and stipulate how the installation work will be carried out. We offer several ways that our specialists own.

• First option. Simultaneous installation of doors with extensions in a single structure, which is mounted in the opening. The free space is filled with construction foam. After that, platbands are installed using self-tapping screws with hidden plugs. As a result, the metal parts of the door frame are hidden from prying eyes.
• Second option. Finishing "in a hook" means decorating the visible parts of the box without affecting the inner opening. Installation is carried out using L-shaped additional elements around the perimeter of the door. This option is more democratic than the first. The disadvantage is aesthetics from the outside, the opening remains unchanged.
• Third option. Installation of extensions after the installation of the front door. First, the necessary measurements of the depth of the opening are made, the width of the platbands is calculated. Planks are fastened, and the gaps between them and the wall are sealed with construction foam. After it dries, platbands are attached around the perimeter of the box.

In our company, customers can order and buy extensions for installation in any of three ways, depending on the desired result and budget. Our specialists will quickly and efficiently perform all work in a strictly agreed time. Phones for communication are listed in the Contacts section.

Not everyone imagines what extensions installed on interior doors are. Meanwhile, these elements give the door a finished look. Their installation is not difficult and is quite feasible with your own hands, especially after watching the video with detailed explanations and photos.

What are extras

Visually, they look like horizontal and vertical planks with different textures and sizes. Their installation is carried out between the door frame and platbands, both with their own hands and with the involvement of specialists.

Additional slats are not only functional - strengthening the door frame, but also aesthetic - they mask defects on the slopes. As a material for their manufacture are used:

• board - most often coniferous;
• Fiberboard, MDF, chipboard, laminated or veneered.

An industrial board is a frame made of wood with thin sheets of MDF fixed on it, which have honeycombs inside, which makes them light, due to this, installation is simplified. The finish of the extensions matches the color of the door frame and the door itself.

What are the types of extensions for interior doors

On sale there are strips of various sizes - from 7 to 40 cm. All extensions are divided into 2 main types. They are:

Standard straight, which are ordinary strips. The width of the extensions intended for interior doors ranges from 7 to 20 cm, and the thickness is 1-1.6 cm. Installation is carried out in the opening. The butt is sometimes decorated with an edge. You can attach them with glue or nails. Dimensions are adjusted by cutting off excess material.

Tip: if you need to mount extensions on a previously installed interior door, add attached elements that are close to the box and are slipped under it - lining.

How to properly install extensions on the door between rooms

Doborny boards are installed with their own hands, not only when installing a new door, but also on existing doors. The easiest way to fix the extensions is when installing a new design that is installed together with the door frame. They must be placed in the form of the letter "P". The installation procedure is as follows:

• Stable stools of the same height are put in a row and a door jamb is placed on them, while the inner side should be on top.
• They check whether all the angles are equal to 90 degrees, for which they measure the diagonals - their sizes must match.
• A groove for dobors is selected with a cutter, if it is absent. Its depth and width must correspond to the thickness of the additional plank.

• A frame is mounted along the contour of the box under the door, but not solid, but in separate strips of plasterboard or plywood. It is enough to put 2 segments at the top, and 3 segments on the sides. They recommend fixing plywood with nails, and drywall with self-tapping screws.

• The upper element is cut out according to the size of the upper groove, and the side parts of the extension along the length of the side parts of the door frame.
• Lubricate the edges of the groove with mounting glue or liquid nails.
• Insert extensions, give time for the glue to harden.

• The temporary frame is dismantled, then the door frame is installed.
• The box is leveled: the width dimensions are adjusted using spacers, checking the verticality of the side parts with a plumb line. The horizontality of the top is achieved through the installation of wedges under the side parts of the box.

• Cracks are sealed with foam, a layer of plaster is applied flush with the wall.

• They carry out the installation of platbands and skirting boards - the installation of the door with extensions is done by hand.

Installation of standard simple extensions on self-tapping screws

Do-it-yourself installation is carried out in several steps:

1. Determine the width, cut off the excess.
2. Screw the plank to the wall.
3. Customize the sides.

No matter how complex operations you have to perform when installing extensions, the result is worth it. Having done everything yourself, you will be convinced of this.

How to install an extension on the door: video

Types of extensions and their features

Doors play an important role in the interior of any room. That is why their installation and design should be approached with great responsibility. In order for the doors to have an aesthetic appearance, they are usually completed with additional trims. What is the function of extensions for interior doors and how to install them correctly? You will learn the answers to this and other questions from the article.

What is a dobor?

Products are special strips, which are horizontal and vertical, of different sizes and textures. They are installed in the doorway between the casing and the box. The need for this arises when it is necessary to mask defects, to give aesthetics to the door.

What else dobory need - to hide the missing width of the door frame. It is for this reason that the name appeared - dobornik, that is, covering the wide slopes at the openings. In a standard room, there are enough boats, but if an apartment or a house is built according to an individual project, then the platbands do not cope with their task, the extensions help to hide the “bare” side walls. Then the design and interior acquire a complete look.

Given the importance of the element, it is worth taking into account that the additional board should be as similar as possible to the door leaf in texture, color and style.

Reasons for installing slats

Door extensions are needed in cases where there are too wide openings in the room.

To make it more clear, let's take an example. The width of the wall is 200 mm. 70 mm of them will be blocked by a box and 130 mm will be closed with an extension. We add 20-30 mm for the groove and get the required plank size (150-160 mm). An additional element is needed only if the platbands are planned from two sides: internal and external.

Ennobling the opening with extensions is a relatively new trend that is gaining popularity. When thinking about how to expand the door frame, it is better to use specially prepared strips. Since the existing casing will not hide an empty wall. Dobors are produced in different widths and lengths, so they completely close the space between the slopes and the door leaf.

Materials and design features

Depending on the form and method of fastening, the types of extensions can be as follows:

Elements are made from a variety of materials. Depending on the raw materials used, door trims for interior doors are made of wood, plastic or MDF.

Wood dobor is made, as a rule, from natural wood. Ash, beech, oak and conifers are used. The additional beam can be edged or tongue-and-groove. It is extremely important that the door leaf and the additional element are made of the same material. This will avoid visual dissonance.

Dobor from MDF is the most requested. It is lightweight, resistant to mechanical damage and easy to install. It is made from a fine-fiber fraction, and is covered with a laminated film or natural veneer on top. Such extensions will be a good addition to both wooden doors and hollow door leaf.

Items from PVC or simply plastic Dobory for doors can be attributed to the number of budget options. They are low cost, easy to install and do not require additional maintenance. Most often used for front doors.

How to choose the right accessories

The first thing you should pay attention to when choosing a material for additional products is their compatibility with the door leaf. As mentioned earlier, for the reliability and harmony of the design, they must be made from the same raw material. It is best to purchase items with doors.

The quality of the selected material is also extremely important. The plank should not have any chips or cracks. A flat and smooth surface without defects indicates the good quality of the product.

If your choice fell on telescopic extensions for interior doors, then in this case, first of all, you need to make sure that there are fasteners. These should be special factory grooves, the shape and size of which are individually selected for all interior doors.

It is worth taking into account the price-quality ratio of the selected product. It is best to give preference to trusted brands and manufacturers. Cheap analogues are unlikely to be high quality.

Before buying a product, you need to accurately calculate how many additional elements you need. As a standard, 2.5 strips are installed on the door.

Door extensions are available in any size, but standard trims are most suitable for an interior unit. The thickness of the additional element must correspond to the thickness of the groove located on the door frame itself. As a rule, it is from 10 mm to 16 mm. The most suitable width of extensions for interior doors ranges from 70 to 200 mm. If it turns out to be a little more, then it is adjusted by cutting. The height of the parts is 2100 mm.

In addition to standard sizes, the slats are made from the material required by the customer, suitable dimensions. Those who live in an apartment or house with an unusual layout are forced to resort to this option.

To independently determine the parameters of the addition, you need to measure the thickness of the wall, the height and width of the doorway. It is necessary to add a small margin of 1-2 cm to the measurements obtained. This is necessary in order to eliminate the possibility of error.

Do-it-yourself installation of dobors on interior doors

Korovin Sergey Dmitrievich

Master of Architecture, graduated from the Samara State University of Architecture and Civil Engineering. 11 years of experience in design and construction.

To give the doors a final look, special strips are installed. Consider how to choose the size of the extensions for interior doors and correctly install all the elements.

What is a door trim

Extensions are specialized planks that differ in parameters and textures. They are attached to the openings and close the slopes.

They are placed in several situations:

• If the width of the box does not match the wall thickness (masking irregularities, sealing slopes);
• To strengthen the mounted canvas, eliminate distortions.

Rice. 1. Door block with extensions

Door extensions for interior doors are an important detail, so they must be chosen according to the style, shade and structure of the panel (looks like a frame). They are bought as a set to avoid mistakes. Panels can be mounted in already installed or new doors on one or both sides of the opening (according to the location of the box).

Mounted extensions look prestigious and, based on the overall style, make the interior solid, luxurious or discreet. They are fixed quickly and easily, which saves time and money. When finishing, the door block does not come into contact with wet compositions, does not get wet and does not deteriorate. This prolongs the life of the structure. In comparison with standard slopes, the additional board becomes a continuation of the missing width of the box.

What are the types of donations

Everyone chooses the technique of mounting the slats, you can do it yourself or turn to professionals. For the manufacture of elements, a flat, tongue-and-groove or edged board is suitable.

If the walls are thicker or the installation is carried out in a humid room, then waterproof plywood is considered suitable, which resists various deformations (delamination, cracks). The extensions made at the factory look more aesthetically pleasing and economical. The main material is an MDF panel covered with a decorative layer. In addition to the fact that the finished boards have different dimensions (length 80-550 mm), they differ in the type of material and cost.

Based on the type of construction, the following options are distinguished:

• telescopic;
• standard without edge;
• standard with edge;
• combined.

Rice. 2. Types of extras

Standard elements are simple laminate or MDF slats, with or without veneer or other finishes.. Based on the quality of the end face, they may have an edge. Some experts believe that it is not necessary to glue the facing edge to the edges, since one end is in close contact with the door frame, and the other is closed with a casing. In such a situation, it will be necessary to carry out the installation carefully, since even with a slight deviation, the raw edge will become noticeable.

If you close the end of the plank in advance with an edge tape of the appropriate shade, then minor flaws will not be noticeable. The cost of the edge is low, and you can glue it quickly with a simple iron. Edging of the ends will be preferable, as swelling of the material from moisture is prevented.

A more complex design has a telescopic (typesetting) element that can be attached to another thanks to a special comb and groove on the edge. With it, you can make the lining of the opening of any width. The principle of its manufacture is identical to the lining. The telescopic dobor differs in shade, thickness and type of material. The bar is placed in a groove where it can be adjusted, wedging deeper or plunging to a shallow depth. Installation does not require the use of fasteners. Usually telescopic products correspond to the material of the panel, therefore they are made of plastic or wood.

The combined plank has an angular shape, as it simultaneously plays the role of a trim and an extension. For the production of planks, MDF, fiberboard, waterproof plywood are used, which are veneered or covered with a decorating film.

Do I need an extension for the door frame

In any room, doors and boxes differ in parameters and characteristics. For example, in the bathroom, their dimensions are already interior, more spacious are the entrance doors. Therefore, there are standards and ranges of sizes.

When measuring the width of the box, it is necessary to determine the indicators of the opening and the panel, since all the characteristics are interconnected.

Rice. 3. Scheme and composition of the bar

Regardless of the convenience and aesthetics of extensions, they do not always need to be installed. Their installation is carried out only in a situation where the width of the box is less than the wall opening for framing.

How to choose the right type and size

Planks can be made with your own hands or bought ready-made. On the construction market, extensions with standard parameters are presented (width 0.7-2.5 cm, thickness 0.6-3 cm and length 2.1 m).

To determine the required width of the panel, add the size of the slope to the depth of the groove of the box. With very thick walls, the plank can be 40 cm thick, but it will need to be ordered individually (its parameters should not exceed the dimensions of the groove in the box).

To make planks yourself, you should take wood, MDF, chipboard or plastic.

When using natural wood, it is coated with antiseptic compounds to protect it from decay and extend its service life. Homemade MDF products will differ from purchased ones, since in the latter the cavity between the plates is filled with cellular material. Chipboards are worse than MDF or wood panels in performance and aesthetics, but they can be used indoors.

Planks are less often made of plastic, but if this happens, metal-reinforced PVC panels are used.

Rice. 3. Variety of planks

Installation of additional panels

The following tools are used to fasten the panels in the opening: level, planer, tape measure, jigsaw, hammer and sharp knife. From building materials you will need foam, fasteners and slats. To properly install the products, you must follow the instructions.

Installation of any types of extensions on interior doors can be carried out in several ways:

• Groove mounting. If it is planned to use planks, then it is desirable that the box has a special groove. This will speed up the installation process and allow you to slightly push (or push) the bar inward, increasing accuracy.

Rice. 4 Taking measurements and mounting the bar

The box must be fixed in the opening, therefore, before placing it, the distance from it to the edge of the wall is measured. The size of each slope is made separately at least at 4 points using a building square. Usually these indicators differ. The width of the slope is added to the depth of the groove in the box, resulting in the parameters of the bar. You can trim the dobor with a saw or a jigsaw to the optimal size.

When using telescopic products, platbands and a box of the same type are selected. The assembly of the block is carried out according to the type of constructor, by inserting the protrusions into the recesses of the parts. Glue provides additional strength to panels and platbands.

• Mounting without groove. If there is no groove in the box, then the elements are attached closely. Such an installation requires accurate measurements, detailed fitting of elements and accuracy.

Rice. 5. Fastening with self-tapping screws

The size of the slopes is determined similarly to the first installation method, the parts are cut, the edge is glued to the cuts. Nails are hammered into the end parts in increments of 20-25 cm and their caps are bitten off with pliers. Then they put the side bars, after which the top one is at a right angle and nailed with a hammer.

• Self-tapping screws. The width of the extension is determined, which is screwed to the wall, the side parts are adjusted in size. Holes for self-tapping screws are made and screwed to the wall. After sealing the joints, a casing is attached, furniture plugs are placed to mask the self-tapping screws.

Elimination of gaps after installation

The immobility of extensions can be ensured by fixing them with masking tape to the box and walls. Spacers are placed between the two elements, and in their absence, the gap is foamed. You should take a balloon and introduce foam in small portions (so that the structure does not move). After it dries, the excess is cut off with a knife at the level of the wall.

Door extensions allow you to aesthetically decorate the opening. With minimal skills in handling glue, nails, saw and foam, such work can be done independently.

Dimensions of extensions for interior doors

To complete the framing of the doorway, special strips are used - extensions for interior doors, the dimensions of which depend on the parameters of the entire input block. To select auxiliary parts, you will need to correctly calculate the length, width and thickness of the elements. You can also adjust the dimensions of the additional boards according to the data obtained during the installation process.

Materials, design features, types of extensions

Additional strips mask the slopes in cases where the width of the box is less than the thickness of the wall. Inserts are placed in the space between the platbands and the box. The materials of additional elements are selected in accordance with the canvas. In order for the color and texture of the decorative inserts to match the doors, it is recommended to purchase the entire entrance structure.

The materials from which the slats are made:

• three-layer plastic panels reinforced with metal;
• from tree species;
• MDF and chipboard panels;
• covered with laminate.

Varieties of extensions in accordance with the installation technology:

1. Standard - ordinary slats, often covered with eco-veneer. The edges of the strip can be raw or framed with an edge tape. If the edge is missing, you will need to perform installation work more carefully. On the ends without edge film, the smallest flaws are visible. Also, the protective layer prevents the panel from deforming when exposed to moisture and temperature fluctuations. The film can be glued independently with an iron.
2. Combined - elements of an angular shape that combine extensions and platbands in one piece. Used for narrow floors. They are built into the grooves located in the box.
3. Telescopic - a complex design that involves fastening with a ridge and grooves. The edge of the plank is inserted at different depths, it can decorate piers of any width. Installation does not require additional fastening.

Standard door sizes

The dimensions of the door extensions correspond to the average dimensions of the door leaf:

1. Standard height - 200-220 cm.
2. The approximate thickness of the plank is 10 cm. Such dimensions provide a tight fastening of the insert into the opening of the box.
3. The width of the elements depends on the thickness of the interior partition. In this regard, the parameters of the slats can be different - 3-20 cm or more.

For private houses and individual layouts, ready-made inserts are not always suitable. It is necessary to order the manufacture of the input structure with additional accessories of a suitable size.

Rules for calculating the width and length of the extension

The width of the extensions is calculated according to the following principle:

1. If there are grooves in the box, it is required to take into account the recess into which a part of the bar is embedded.
2. The width of the remaining opening is measured from the box to the edge of the wall.
3. The parameters of the extensions are determined based on the maximum measurements by points.
4. If measurements are made before installation or after dismantling the door structure, the width of the plank is calculated as the difference between the thickness of the wall and the width of the future box.

Important! Measurements must be taken separately for the top and side panels at least in several places. The surface of the walls is often uneven.

The length of the panel is equal to the height of the side posts of the box. When calculating the dimensions of individual parts of the input structure, generally accepted standards must be taken into account.

The main requirements for the dimensions of the door block, according to GOST:

• the gap between the box and the wall should be 10-15 mm;
• the distance along the perimeter between the canvas and the loot - 3 mm;
• the gap between the door and the floor in the absence of a threshold - 10 mm;
• to improve the performance of sound and heat insulation, sealing strips or a sealant are used.

If the parameters of the additional inserts do not meet the regulatory requirements, you must adjust the dimensions manually using tools.

How to determine the required thickness

The thickness of the additional board should not exceed the dimensions of the groove in the box. The average value ranges from 10-16 mm.

Factory strips are produced in standard sizes, depending on the parameters of the partition:

• if the wall width is up to 9 cm, then the thickness of the decorative insert is 1.5 cm;
• up to 16.5 cm - 1.5 / 2.5 cm;
• up to 26.5 cm - 2.5 cm.

The maximum thickness of finished panels is 3 cm. For non-standard openings, extensions are made to order.

For interior structures, planks of average thickness up to 1.4-1.5 cm are sufficient, and for entrance doors it is recommended to use extensions of 1.5-2.5 cm or more.

What to do if the sizes of the extensions do not fit

There are situations when the dimensions of the extensions are larger or smaller than the remaining uncovered section of the wall. If it is not possible to order new trims, you can adjust the inserts with your own hands.

In the case of too wide elements, you only need to carefully reduce the size of the board with improvised tools (saw, hacksaw). On the front side, you need to make a groove for installing platbands. Difficulties may arise with telescopic rails. The ends of the bar are equipped with grooves on both sides. Such boards are sawn lengthwise, spikes are cut off from the platbands and nailed to the even edge of the extension with nails or studs.

With excessively wide walls for cladding, several additional elements are used, combined with furniture clips, glue, hardboard strips, thin wooden blocks. Telescopic structures are connected by specially prepared thin strips, which are placed in the recess of two adjacent ends.

Another way is to pick up a plastic insert to match the block and sew up a section with a bare wall. It is better to glue on colorless silicone. Such a mount is easily dismantled if something needs to be changed or corrected.

If you plan to independently lining the passage, it is better to buy parts with a margin in measurements. Additional centimeters may be needed to correct flaws or errors in calculations. It is also recommended to simultaneously select all the components of the structure, so as not to miscalculate with the shade and texture of the finished block.